gitlab 服务端日志一直提示
==> /var/log/gitlab/sshd/current <==
2022-12-05_11:27:50.60456 kex_exchange_identification: Connection closed by remote host
2022-12-05_11:27:50.73192 kex_exchange_identification: Connection closed by remote host
2022-12-05_11:27:50.96966 kex_exchange_identification: Connection closed by remote host
2022-12-05_11:27:51.09636 kex_exchange_identification: Connection closed by remote host
这是为什么？